Despite an effort to cut risk, Bridgewater Associates' All Weather Fund extended its losses in August.

The $70 billion risk-parity hedge fund shed a further 1.4% last month and is down about 7% on the year, Reuters reports. The huge fund lost 8.4% in the second quarter, including a 6.22% drop in June.

Bridgewater rejiggered the fund's models in the second quarter after determining that the strategy was too vulnerable to interest-rate volatility. The changes were the first major alterations to the strategy since it launched in 1996.

All Weather aims to return 5% to 7% above cash per year, and returned 14.7% last year.

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We are accustomed to splitting trading into technical and fundamental buckets. Both involve crunching data; one set includes market fundamentals and the other pure price data. Alternative data is a third bucket that is gaining traction.